Frequency variation of initial permeability of NiZn ferrites prepared by the citrate precursor method

Ni1-xZnxFe2O4 with x = 0.2, 0.35, 0.05 and 0.6 have been prepared by the ci trate precursor method. The complex initial permeability has been studied a s a function of the composition and sintering temperature. Preparation by t his method has resulted in ferrites with permeability spectra comparable to those obtained by the conventional method. The main advantages of this met hod are the scope for preparing lower-loss ferrites and the possibility of increasing the operational frequency range. (C) 2000 Elsevier Science B.V. All rights reserved.